package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavourMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {
   @Autowired
   private DishMapper dishMapper;
   @Autowired
   private DishFlavourMapper dishFlavourMapper;
  @Autowired
    private SetmealDishMapper setmealDishMapper;
   //新增菜品和对应的口味
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish=new Dish();
        BeanUtils.copyProperties(dishDTO,dish);

        //向菜品表插入一条数据
dishMapper.insert(dish);
        Long dishId = dish.getId();

        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors!=null&&flavors.size()>0){
           flavors.forEach(dishFlavor -> {
               dishFlavor.setDishId(dishId);
                   });
            //向口味表插入n条数据
dishFlavourMapper.insertBatch(flavors);
        }
    }
    //菜品分页查询
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO){
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page=dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

//删除
    @Transactional
    public void deleteBatch(List<Long> ids) {
//判断当前菜品是否能删除--是否存在其手中的菜品
       for(Long id : ids){
         Dish dish=dishMapper.getById(id);
         if (dish.getStatus()== StatusConstant.ENABLE){
             //当前菜品处于起售中,不能删除
             throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);

         }
       }

        //判断当前菜品是否能删除--是否与套餐关联了??
List<Long> setmealIds=setmealDishMapper.getSetmealIdsByDishIds(ids);
     if (setmealIds!=null&&setmealIds.size()>0){
         //当前菜品被改套餐关联了,不能删除
         throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);

     }
        //删除菜品表中的菜品数据
       /*for (Long id : ids) {
            dishMapper.deleteById(id);
            //删除菜品关联的口味数据
            dishFlavourMapper.deleteByDishId(id);
        }*/
        //根据菜品id集合批量删除菜品数据
dishMapper.deleteByIds(ids);
        //根据菜品id集合批量删除关系的口味数据
dishFlavourMapper.deleteByDishIdsBatch(ids);

        //sql

    }


    public DishVO getByIdwithFlavor(Long id) {
        //根据id查询菜品数据
        Dish dish = dishMapper.getById(id);

        //根据菜品id查询口味数据
List<DishFlavor>dishFlavours=dishFlavourMapper.getByDishId(id);

        //将查询到的数据封装到vo
        DishVO dishVO=new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
       dishVO.setFlavors(dishFlavours);
        return dishVO;
    }

        public void updateWithFlavor(DishDTO dishDTO) {
      Dish dish=new Dish();
      BeanUtils.copyProperties(dishDTO,dish);
       //修改菜品表基本信息
       dishMapper.update(dish);


       //删除原有的口味数据
dishFlavourMapper.deleteByDishId(dishDTO.getId());

       //重新插入口味数据L
            List<DishFlavor> flavors =dishDTO.getFlavors();
            if (flavors!=null&&flavors.size()>0){
                flavors.forEach(dishFlavor -> {
                    dishFlavor.setDishId(dishDTO.getId());
                });
                //向口味表插入n条数据
                dishFlavourMapper.insertBatch(flavors);
            }
    }
public List<Dish> list(Long categoryId){
        Dish dish=Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return  dishMapper.list(dish);
}
    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavourMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        log.info("菜品起售停售：status={}, id={}", status, id);
        Dish dish = new Dish();
        dish.setId(id);
        dish.setStatus(status);
        dishMapper.update(dish);
    }

}
